the questions (1-5).
One of the most frightening and destructive
phenomena of nature is a severe earthquake and its
terrible after effects. Earthquakes are the result of
forces deep within the earth's interior that
continuously affects the surface of the earth. The
energy from these forces is stored in a variety of ways
within the rocks. When this energy is released
suddenly, an earthquake occurs. The area of the fault
where the sudden rupture takes place is called the
focus or hypo-centre of the earthquake. The point on
the earth's surface directly above the focus is called
the epicentre of the earthquake. The effect of an
earthquake on the earth's surface is called the
intensity. The intensity scale consists of a series of
responses such as the number of people who woke
up, movement of furniture, damage to chimneys and
finally total destruction. The magnitude of 5.3 might
be a moderate earthquake, and a strong earthquake
might be rated with the magnitude 6.3. An earthquake
in a densely populated area which results in many
deaths may have the same magnitude but acts only
as a shock in a remote area that does nothing more
than frightening the wildlife.
1. The passage deals with *
a) the magnitude of earthquakes
O b) the causes of earthquakes
O c) the effect of earthquakes
O d) the cause and effect of earthquakes
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